WO2005064689A1 - Module de transmission optique de donnees - Google Patents

Module de transmission optique de donnees Download PDF

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Publication number
WO2005064689A1
WO2005064689A1 PCT/JP2004/019090 JP2004019090W WO2005064689A1 WO 2005064689 A1 WO2005064689 A1 WO 2005064689A1 JP 2004019090 W JP2004019090 W JP 2004019090W WO 2005064689 A1 WO2005064689 A1 WO 2005064689A1
Authority
WO
WIPO (PCT)
Prior art keywords
emitting element
light emitting
light
communication module
data communication
Prior art date
Application number
PCT/JP2004/019090
Other languages
English (en)
Japanese (ja)
Inventor
Tomoharu Horio
Original Assignee
Rohm Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rohm Co., Ltd. filed Critical Rohm Co., Ltd.
Priority to US10/584,116 priority Critical patent/US20070194339A1/en
Publication of WO2005064689A1 publication Critical patent/WO2005064689A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0203—Containers; Encapsulations, e.g. encapsulation of photodiodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/12—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof structurally associated with, e.g. formed in or on a common substrate with, one or more electric light sources, e.g. electroluminescent light sources, and electrically or optically coupled thereto
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L23/00—Details of semiconductor or other solid state devices
    • H01L23/02—Containers; Seals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
    • H01L25/16—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits
    • H01L25/167—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof the devices being of types provided for in two or more different main groups of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. forming hybrid circuits comprising optoelectronic devices, e.g. LED, photodiodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0232—Optical elements or arrangements associated with the device
    • H01L31/02325—Optical elements or arrangements associated with the device the optical elements not being integrated nor being directly associated with the device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/02—Details
    • H01L31/0232—Optical elements or arrangements associated with the device
    • H01L31/02327—Optical elements or arrangements associated with the device the optical elements being integrated or being directly associated to the device, e.g. back reflectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42—Wire connectors; Manufacturing methods related thereto
    • H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/484—Connecting portions
    • H01L2224/48463—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond
    • H01L2224/48465—Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
    • H01L2924/30—Technical effects
    • H01L2924/301—Electrical effects
    • H01L2924/3025—Electromagnetic shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L33/44—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the coatings, e.g. passivation layer or anti-reflective coating
    • H01L33/46—Reflective coating, e.g. dielectric Bragg reflector

Definitions

  • the present invention relates to an optical data communication module incorporated in a personal computer, a peripheral device thereof, a mobile phone, or the like, and particularly to an infrared data communication module.
  • FIG. 4 shows an example of a conventional infrared data communication module.
  • the illustrated infrared data communication module 9 includes a substrate 90, and a light emitting element 92, a light receiving element 93, and an IC chip 94 are mounted on a surface 90a of the substrate 90, and these parts are sealed with a resin package. Covered by 91.
  • the resin package 91 enhances the light receiving sensitivity by collecting the infrared light emitted from the light emitting element 92 to enhance the directivity and collecting the infrared light traveling from the outside to the light receiving element 93.
  • a second lens unit 91b for the second lens unit.
  • the IC chip 94 performs drive control of the light emitting element 92 and signal processing for outputting a predetermined signal to the outside based on a signal from the light receiving element 93.
  • Such an infrared data communication module is disclosed, for example, in JP-A-2002-76427 (Patent Document 1 below).
  • Patent Document 1 JP-A-2002-76427
  • the light emitting element 92 when the light emitting element 92 is driven, the light emitting element 92 may generate electromagnetic noise.
  • an IC chip 94 is provided near the light emitting element 92. Therefore, conventionally, the electromagnetic noise generated from the light emitting element 92 has a bad influence on the IC chip 94 and the IC chip 94 may malfunction.
  • the present invention has been conceived under the above circumstances, and reduces the possibility that an IC chip malfunctions due to electromagnetic noise generated from a light emitting element, and also reduces the possibility that the light emitting element It is an object of the present invention to provide an optical data communication module capable of reducing the amount of infrared rays scattered by force, in particular, an infrared data communication module.
  • An optical data communication module provided by the present invention includes a substrate, a light emitting element, a light receiving element, an IC chip, and a sealing resin package.
  • the substrate In the configuration in which the IC chip is mounted on the substrate and covered with the sealing resin package, the substrate has a recess whose inner surface is covered by a ground-connected metal film, and a bracket is provided.
  • the light emitting element is disposed in the recess.
  • the metal film is connected to the ground, and exhibits an electromagnetic shielding function. Therefore, the electromagnetic noise generated from the light emitting element is shielded by the metal film. And it can be prevented from reaching the IC chip. Therefore, it is possible to prevent the IC chip from malfunctioning due to the electromagnetic noise generated by the light receiving element force. Further, light emitted from the light-emitting element can be reflected in a predetermined direction by the metal film, so that light is prevented from being scattered around the light-emitting element. This makes it possible to increase the amount of light emitted from the light emitting element in a predetermined direction outside the resin package, and to improve the communication performance while saving power.
  • the light emitting element is an infrared light emitting element
  • the light receiving element is an infrared light receiving element
  • the height of the uppermost portion of the metal film is higher than the height of the light emitting element. According to such a configuration, the propagation of electromagnetic noise toward the light emitting element power IC chip is more reliably prevented.
  • the concave portion is filled with a resin having a higher elastic modulus than the resin package, and the light emitting element is covered with the resin of the parentheses. According to such a configuration, it is avoided that stress acts directly on the light emitting element from the resin package. As a result, the light emitting element is protected. Further, by filling the concave portion with resin, it is possible to prevent the resin from flowing around the light emitting element and unreasonably spreading.
  • the recess has a truncated conical shape whose diameter decreases toward the bottom. According to such a configuration, it is possible to efficiently reflect the infrared light emitted from the light emitting element to the periphery thereof toward the upper side of the concave portion (the direction opposite to the bottom surface), and to reduce the amount of emitted light. It is more suitable to increase the directivity as well as to increase.
  • FIG. 1 is a schematic perspective view showing an example of an infrared data communication module according to the present invention.
  • FIG. 2 is a sectional view taken along the line IHI in FIG. 1.
  • FIG. 3 is an enlarged sectional view of a main part of the infrared data communication module shown in FIG. 2.
  • FIG. 4 is a cross-sectional view showing an example of a conventional infrared data communication module.
  • the infrared data communication module 1 shown in Figs. 1 and 2 includes a substrate 2, a light emitting element 3 that emits infrared light, a light receiving element 4 that can receive and sense infrared light, an IC chip 5, and a sealing element.
  • the light emitting element 3, the light receiving element 4, and the IC chip 5 are mounted on the surface 2a of the substrate 2.
  • the resin package 6 covers the light emitting element 3, the light receiving element 4, and the IC chip 5!
  • the substrate 2 is an insulating substrate made of glass epoxy resin or the like, and has a rectangular shape in a plan view.
  • a wiring pattern for supplying power to the light emitting element 3, the light receiving element 4, and the IC chip 5 and for inputting and outputting signals is formed.
  • a plurality of terminals (not shown) used for surface mounting are formed on the back surface of the substrate 2, and the plurality of terminals and the front surface 2a are connected via a plurality of film conductors 20 formed on the side surface of the substrate 2. Wiring of Noturn is connected.
  • Each of the film conductors 20 is provided in the semi-cylindrical recess 21, so that the film conductor 20 also protrudes the side force of the substrate 2.
  • a concave portion 22 having an upper opening shape is formed, and the light emitting element 3 is arranged in the concave portion 22.
  • the recess 22 has an inverted truncated cone shape with a smaller diameter toward the bottom. Can be formed by machining.
  • Metal film 7 is formed so as to entirely cover the bottom surface and inner peripheral surface of concave portion 22.
  • the metal film 7 has a flange 70 covering the periphery of the recess 22.
  • the metal film 7 includes a plurality of layers 7a to 7c.
  • the lowermost layer 7a is made of, for example, copper and is formed simultaneously with the formation of the wiring pattern.
  • the lowermost layer 7a is grounded.
  • the intermediate layer 7b serves, for example, as a nickel force, and plays a role of increasing the bonding strength of the uppermost layer (surface layer) 7c to the lowermost layer 7b.
  • the uppermost layer 7c is made of, for example, metal power having excellent corrosion resistance.
  • the light emitting element 3 is an infrared LED, and is bonded to the metal film 7 via, for example, a conductive adhesive, so that a cathode is formed on the bottom surface of the light emitting element 3.
  • the cathode is electrically connected to the metal film 7.
  • An anode is formed on the upper surface of the light emitting element 3, and the anode is connected to the nod portion 29 of the wiring pattern via a wire W.
  • the height of the light emitting element 3 is lower than the upper surface of the flange 70 of the metal film 7, so that the light emitting element 3 does not protrude beyond the opening of the recess 22.
  • the recess 22 is provided with a buffer body 8 formed by filling a soft silicone resin or the like having an elastic modulus (elastic coefficient) smaller than that of the sealing resin package 6, and the light emitting element 3 is provided with the buffer body 8. Covered by body 8.
  • the buffer body 8 has infrared transmittance.
  • the light receiving element 4 includes a photodiode capable of sensing infrared rays.
  • the IC chip 5 drives the light emitting element 3 and amplifies the signal output from the light receiving element 4.
  • the sealing resin package 6 is made of, for example, an epoxy resin containing a pigment and does not transmit visible light, but transmits infrared light.
  • the sealing resin package 6 includes a first lens 61 for condensing infrared light traveling upward from the light emitting element 3 and a second lens for condensing externally transmitted infrared light on the light receiving element 4. 62 and.
  • the electromagnetic noise generated from the light emitting element 3 is Be cut off. Therefore, the electromagnetic noise is prevented from reaching the IC chip 5, and malfunction of the IC chip 5 due to the electromagnetic noise can be prevented.
  • the height of the light emitting element 3 does not protrude beyond the concave portion 22, the electromagnetic force from the light emitting element 3 to the IC chip 5 is more reliably prevented from progressing.
  • Infrared rays are emitted not only from the upper surface of the light emitting element 3 but also from each side surface of the light emitting element 3.
  • the infrared rays emitted from each side force are reflected upward on the surface of the metal film 7. Therefore, the amount of infrared light that passes through the first lens 61 of the sealing resin package 6 and is emitted upward can be increased. Since the concave portion 22 has an inverted truncated cone shape whose diameter decreases toward the bottom, the efficiency of advancing infrared rays toward the lens 61 is good, and the directivity of the infrared rays is also enhanced. Further, since the uppermost layer 7c of the metal film 7 is made of gold and has a high infrared reflectance, it is more suitable for increasing the amount of emitted infrared light.
  • the buffer body 8 serves to prevent the light emitting element 3 from directly receiving the stress from the sealing resin package 6 and to alleviate the stress. Therefore, the light emitting element 3 is protected.
  • the resin forming the buffer body 8 was dropped on the light emitting element 3 in a liquid state in the manufacturing process of the infrared data communication module 1. In this case, the resin can stay in the concave portion 22 and spread over a large area on the substrate 2.
  • the specific configuration of the optical data communication module according to the present invention is not limited to the above-described embodiment, and can be variously changed in design.
  • the metal film 7 does not have to have a three-layer structure as described above, and may have a laminated structure including different numbers of metal layers or a single-layer structure.
  • the specific material of each metal layer forming the metal film 7 is not limited.
  • the specific shape and size of the concave portion 22 in which the light emitting element 3 is housed and arranged are not limited.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Led Device Packages (AREA)
  • Photo Coupler, Interrupter, Optical-To-Optical Conversion Devices (AREA)
  • Light Receiving Elements (AREA)

Abstract

L'invention concerne un module de transmission infrarouge (1) de données comprenant un dispositif photoémetteur infrarouge (3), un dispositif photorécepteur infrarouge (4) et une puce CI (5). Le dispositif photoémetteur (3), le dispositif photorécepteur (4) et la puce CI (5) sont montés sur un substrat (2) et recouverts d'un boîtier en résine d'étanchéité (6). Le substrat (2) est doté d'une partie évidée (22) dont la surface intérieure est recouverte d'une couche mince métallique (7) reliée à la masse, et le dispositif photoémetteur (3) est agencé dans la partie évidée (22).
PCT/JP2004/019090 2003-12-25 2004-12-21 Module de transmission optique de donnees WO2005064689A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/584,116 US20070194339A1 (en) 2003-12-25 2004-12-21 Optical data communication module

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003429322A JP4426279B2 (ja) 2003-12-25 2003-12-25 赤外線データ通信モジュール
JP2003-429322 2003-12-25

Publications (1)

Publication Number Publication Date
WO2005064689A1 true WO2005064689A1 (fr) 2005-07-14

Family

ID=34736300

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2004/019090 WO2005064689A1 (fr) 2003-12-25 2004-12-21 Module de transmission optique de donnees

Country Status (6)

Country Link
US (1) US20070194339A1 (fr)
JP (1) JP4426279B2 (fr)
KR (1) KR100824155B1 (fr)
CN (1) CN1898805A (fr)
TW (1) TWI250660B (fr)
WO (1) WO2005064689A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7291867B2 (en) * 2005-03-09 2007-11-06 Sharp Kabushiki Kaisha Optical semiconductor device, electronic device, and method for producing optical semiconductor device

Families Citing this family (13)

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US8148735B2 (en) * 2005-03-07 2012-04-03 Rohm Co., Ltd. Optical communication module
JP2007035810A (ja) * 2005-07-26 2007-02-08 Rohm Co Ltd 光通信モジュール
JP4744998B2 (ja) * 2005-09-14 2011-08-10 ローム株式会社 光通信モジュール
JP5013472B2 (ja) * 2007-10-30 2012-08-29 パナソニック電工Ｓｕｎｘ株式会社 光電センサ
US9496247B2 (en) * 2013-08-26 2016-11-15 Optiz, Inc. Integrated camera module and method of making same
EP3168874B1 (fr) 2015-11-11 2020-09-30 Lipac Co., Ltd. Boîtier de puce semi-conductrice avec interface optique
DE102016118996A1 (de) 2016-10-06 2018-04-12 Osram Opto Semiconductors Gmbh Herstellung von sensoren
CN106449599A (zh) * 2016-11-30 2017-02-22 南通沃特光电科技有限公司 一种天线装置的制造方法
KR102040116B1 (ko) * 2017-12-28 2019-11-05 주식회사 지파랑 광 인터페이스를 가지는 반도체 칩 패키지
CN113015485B (zh) * 2018-11-12 2024-08-20 索尼集团公司 生物信息测量装置
CN115867828A (zh) * 2020-06-15 2023-03-28 利派克株式会社 半导体封装件及制造半导体封装件的方法
CN111830647A (zh) 2020-06-30 2020-10-27 宁波群芯微电子有限责任公司 光电耦合装置
CN114883316A (zh) * 2022-05-10 2022-08-09 青岛青软晶尊微电子科技有限公司 基于无线高速总线的新型封装系统芯片npsc架构

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JPH0563239A (ja) * 1991-08-29 1993-03-12 Mitsubishi Cable Ind Ltd Ｌｅｄ表示装置
JPH10154825A (ja) * 1996-11-25 1998-06-09 Sharp Corp 発光／受光装置
JP2001177118A (ja) * 1999-12-17 2001-06-29 Sharp Corp 赤外線データ通信モジュール
JP2002176184A (ja) * 2000-12-11 2002-06-21 Rohm Co Ltd 赤外線データ通信モジュールおよびその製造方法
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US7291867B2 (en) * 2005-03-09 2007-11-06 Sharp Kabushiki Kaisha Optical semiconductor device, electronic device, and method for producing optical semiconductor device

Also Published As

Publication number Publication date
TW200525772A (en) 2005-08-01
JP4426279B2 (ja) 2010-03-03
TWI250660B (en) 2006-03-01
JP2005191189A (ja) 2005-07-14
US20070194339A1 (en) 2007-08-23
CN1898805A (zh) 2007-01-17
KR100824155B1 (ko) 2008-04-21
KR20060110354A (ko) 2006-10-24

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